Differential pressure
Deltabar PMD55

Differential pressure transmitter with metal sensor for measurement of pressure differences

PMD55

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Specs at a glance

Accuracy

0,1%
"PLATINUM" 0,075%
Process temperature

-40 °C...85 °C
(-40 °F...185 °F)
Pressure measuring range

10mbar...40bar
(0.15...580psi)
Main wetted parts

316L
Material process membrane

316L, AlloyC,
Measuring cell

10 mbar...40 bar
(0.15...580 psi)

See all specifications

Field of application

The Deltabar PMD55 differential pressure transmitter with piezoresistive sensor and welded metallic membrane is typically used in process or environmental applications for continuous measurement of pressure differences in liquids, vapors and gases. Quick Setup with adjustable measuring range allows simple commissioning, reduces costs and saves time. SIL2 according to IEC 61508 / IEC 61511.

For level, volume or mass measurement in liquids, differential pressure monitoring, e.g. of filters and pumps as well as flow measurement (volume or mass flow) in conjunction with primary elements in gases, vapors and liquids.

Process connections: Threads
Process temperature: -40 to 85°C (-40 to 185°F)
Measuring ranges: 0.5mbar to 40bar (0.0072 to 600psi)
Accuracy: ±0.1%, "Platinum" ±0.075% (optional)
International explosion protection certificates, SIL

Benefits

Easy menu-guided commissioning via local display, 4 to 20mA with HART, PROFIBUS PA, FOUNDATION Fieldbus
Easy process adaptation to impulse line high-pressure/low-pressure change via electric switch on the main electronics
Compact design and modular concept for easy replacement of display or electronics
Process pressure up to SIL2, certified to IEC 61508 and IEC 61511
Global usage thanks to the widest range of approvals for industries and applications

Videos

Pressure measuring principle

Lean selection

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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Success stories

Inline gas ultrasonic flowmeter improves company's process

How one Permian oil company improved its process efficiency with an inline gas ultrasonic flowmeter
Read the full story
Time saved, safety increased

Employees of Returkraft regularly have to fulfill and document all requirements of the SIL measuring points in the plant.
Read the full story
Fit for purpose instrumentation for CNG compressors

The Egyptian government is working to replace liquid fuels with natural gas. To achieve this they targeted increasing the number of CNG stations in their country from 306 to 1000 by the end of 2021.
Read the full story

Measuring principle

Differential pressure
Characteristic

Digital transmitter with metallic measuring diaphragms
Compact size
Modular transmitter
Long-term stability
Supply voltage

4...20 mA HART
11,5...45V DC (Non Ex):
Ex ia: 11,5...30V DC
PROFIBUS PA:
9...32 V DC (Non Ex)
FOUNDATION Fieldbus:
9...32 V DC (Non Ex)
Reference Accuracy

Standard 0.1%
Platinum 0.075%
Long term stability

0.05% of URL/ year
0.13% of URL/ 5 years
0.23% of URL/ 10 years
Process temperature

-40°C...+85°C
(-40°F...+185°F)
Ambient temperature

-40°C...+85°C
(-40°F...+185°F)
Measuring cell

10 mbar...40 bar
(0.15...580 psi)
Smallest calibratable span

10 mbar (0.15 psi)
Max. Turn down

20:1
Max. overpressure limit

on one side:
160 bar
(2300 psi)
Process connection

1/4-18 NPT
Material process membrane

316L, AlloyC,
Material gasket

Viton, PTFE, EPDM, NBR
Fill fluid

Silicone oil
Inert oil
Material housing

Die-cast aluminum
Communication

4...20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus
Certificates / Approvals

ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, UK Ex
Safety approvals

SIL
Design approvals

NACE MR0175
EN10204-3.1
Successor

PMD55B

Measuring principle

Differential pressure
Characteristic / Application

Digital transmitter with metallic measuring diaphragms
Compact size
Modular transmitter
Long-term stability
Supply / Communication

4...20mA HART:
11,5...45V DC
Ex ia: 11,5...30V DC
Accuracy

0,1%
"PLATINUM" 0,075%
Long term stability

0,05% of URL/year
0,125% of URL/5 years
Ambient temperature

-40°C...85°C
(-40°F...185°F)
Process temperature

-40 °C...85 °C
(-40 °F...185 °F)
Process pressure / max. overpressure limit

160 bar
Pressure measuring range

10mbar...40bar
(0.15...580psi)
Main wetted parts

316L
Process connection

1/4-18 NPT
Communication

4...20mA HART
PROFIBUS PA
FOUNDATION Fieldbus
Certificates / Approvals

ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI
Safety approvals

SIL
Design approvals

EN 10204-3.1
NACE MR0175, MR0103
AD2000
Options

4-line digital display
Aluminium housing
Successor

PMD55B
Application limits

Measuring cell:
Metal welded

Measuring principle

Differential pressure
Product headline

Digital transmitter with metallic measuring diaphragms
Compact size
Modular transmitter
Long-term stability
Max. measurement error

0,1%
"PLATINUM" 0,075%
Max. process pressure

10 mbar...40 bar
(0.15...580 psi)
Medium temperature range

Temperature gradient from pressure piping
Display/Operation

Option
Outputs

4...20mA HART
Digital communication

HART
Hazardous area approvals

ATEX, FM, CSA, IECEx, INMETRO, NEPSI, TIIS
Functional safety

SIL
Material certificates

NACE MR0103
NACE MR0175
EN10204-3.1

Measuring principle

Differential pressure
Product headline

Digital transmitter with metallic measuring diaphragms
Compact size
Modular transmitter
Long-term stability
Max. measurement error

0,1%
"PLATINUM" 0,075%
Max. process pressure

10mbar...40bar
(0.15...580psi)
Medium temperature range

Temperature gradient from pressure piping
Display/Operation

Option
Outputs

4...20mA HART
Digital communication

HART
Hazardous area approvals

ATEX, FM, CSA, IECEx, INMETRO, NEPSI, TIIS
Functional safety

SIL
Material certificates

NACE MR0103
NACE MR0175
EN10204-3.1

Measuring principle

Differential pressure
Product headline

Digital transmitter with metallic measuring diaphragms
Compact size
Modular transmitter
Long-term stability
Max. measurement error

0,1%
"PLATINUM" 0,075%
Max. process pressure

10mbar...40bar
(0.15...580psi)
Medium temperature range

Temperature gradient from pressure piping
Display/Operation

Option
Outputs

4...20mA HART
Digital communication

HART
Hazardous area approvals

ATEX, FM, CSA, IECEx, INMETRO, NEPSI, TIIS
Functional safety

SIL
Material certificates

NACE MR0103
NACE MR0175
EN10204-3.1

	EN
01/04/2024
22/09/2021
16/04/2019
13/12/2016
13/07/2016

Language:	English
Version:	01/04/2024
File size:	2.6 MB
File name:	TI00434PEN_2324-00.pdf

	EN
01/08/2024
13/07/2016
10/12/2014
11/06/2014
17/08/2012

Language:	English
Version:	01/08/2024
File size:	2.5 MB
File name:	BA00382PEN_2122-00.pdf

Language:	English
Version:	20/03/2007
File size:	3.8 MB
File name:	TI425PEN_1007.pdf

	EN
20/03/2007

	EN
12/10/2007

	EN
22/06/2015

Differential pressureDeltabar PMD55

Differential pressure transmitter with metal sensor for measurement of pressure differences

Specs at a glance

Accuracy

Process temperature

Pressure measuring range

Main wetted parts

Material process membrane

Measuring cell

Field of application

Benefits

Videos

Lean selection

Success stories

Inline gas ultrasonic flowmeter improves company's process

Time saved, safety increased

Fit for purpose instrumentation for CNG compressors

Measuring principle

Characteristic

Supply voltage

Reference Accuracy

Long term stability

Process temperature

Ambient temperature

Measuring cell

Smallest calibratable span

Max. Turn down

Max. overpressure limit

Process connection

Material process membrane

Material gasket

Fill fluid

Material housing

Communication

Certificates / Approvals

Safety approvals

Design approvals

Successor

Measuring principle

Characteristic / Application

Supply / Communication

Accuracy

Long term stability

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Pressure measuring range

Main wetted parts

Process connection

Communication

Certificates / Approvals

Safety approvals

Design approvals

Options

Successor

Application limits

Measuring principle

Product headline

Max. measurement error

Max. process pressure

Medium temperature range

Display/Operation

Outputs

Digital communication

Hazardous area approvals

Functional safety

Material certificates

Measuring principle

Product headline

Max. measurement error

Max. process pressure

Medium temperature range

Display/Operation

Outputs

Digital communication

Hazardous area approvals

Functional safety

Material certificates

Measuring principle

Product headline

Differential pressure
Deltabar PMD55